I think 90 degrees but not 100 percent sure
Answer:
A) 14
Step-by-step explanation:
BC is congruent to DC in saying this you can plug the equations to each other and solve for y and then put its back into the equation for BC to get the length.
3y+5=5y-1
subtract 3y from both sides --> 5=2y-1
add 1 to both sides --> 6=2y
now get y alone, divide by 2 by both side --> y=3
plug y in back to 5y-1 --> 5x3-1
15-1
BC = 14
The discriminant is b²-4ac
when the discriminant is 0, there is only one solution.
Answer:
The answer is 9.
Step-by-step explanation:
m = 5
n = 4
m + n
(5) + (4) = 9
